Mailflo publishes correct SPF, DKIM, and DMARC records for every sending domain, monitors for drift, analyzes DMARC reports, and auto-repairs authentication failures — so your emails pass authentication on every send.
Authentication is not a one-time setup. These are the four ways it fails silently after the initial configuration.
A missing SPF include, a broken DKIM selector, or a DMARC record with a typo breaks authentication with no bounce, no error message — just emails quietly filtered into spam. Most teams don't discover the problem until reply rates have already collapsed.
A DMARC record set to p=none with no monitoring is almost as bad as no DMARC at all. Without reading the aggregate reports, you have no idea who is sending email from your domain — including bad actors spoofing your address to spam your prospects.
DKIM keys rotate, DNS providers get migrated, new tools get added to the sending stack. Each change can silently break authentication. Without continuous monitoring, the first sign of a problem is usually a deliverability collapse two weeks after the change happened.
Every cold email domain needs its own SPF, DKIM, and DMARC — three records per domain, all of which can drift independently. Managing authentication across a scaled cold email program is a full-time technical responsibility most sales teams are not equipped for.
Six service layers covering SPF, DKIM, DMARC configuration, monitoring, and enforcement — done for you, maintained continuously.
Correct SPF records published for every sending domain — including provider-specific includes for Google Workspace, Microsoft 365, and any ESPs in your stack — with real-time validation and unauthorized sender alerts.
2048-bit DKIM keys generated and published for every sending domain. Selectors activated through Google Admin or Exchange admin. Continuous monitoring for key rotation, selector deactivation, or record drift.
Phased DMARC rollout across every sending domain: p=none for visibility, p=quarantine once all senders are mapped, p=reject for full enforcement — with alignment tuned to your sending infrastructure.
Continuous analysis of DMARC aggregate (rua) and forensic (ruf) reports. Weekly summaries showing pass/fail rates, unauthorized senders, and alignment failures — so you always know the complete state of your sending landscape.
Real-time validation of all authentication records across every sending domain. When a record drifts or breaks — from a DNS migration, provider change, or accidental edit — Mailflo detects it immediately and auto-repairs within defined parameters.
Full authentication audit of all your existing sending domains: SPF, DKIM, DMARC, MTA-STS, and BIMI readiness check. Misconfigured records identified, prioritized by deliverability impact, and remediated same-day.
Mailflo audits, configures, monitors, and enforces authentication across every sending domain you own.
Every sending domain is scanned: SPF, DKIM, DMARC, MTA-STS, and BIMI readiness. Misconfigurations are identified and prioritized by deliverability risk.
Correct records are published for every domain. DKIM selectors activated through Google Admin or Exchange. DMARC set to p=none to begin mapping all sending sources.
Continuous drift monitoring across all records. DMARC aggregate reports analyzed weekly. Any unauthorized senders or alignment failures surface immediately.
Once all legitimate senders are mapped and authenticated, DMARC policy progresses to p=quarantine then p=reject — full domain protection without disrupting any legitimate email flow.
"We had a broken DKIM selector on three of our sending domains for six weeks without knowing it. Mailflo caught it on day one of their audit and fixed it the same afternoon. Reply rates went from 2.1% back to 5.8% within two weeks."
Correct SPF/DKIM/DMARC is necessary but not sufficient for cold email deliverability. Mailflo covers the complete stack.
End-to-end infrastructure — secondary domains, inbox provisioning across GWS and M365, warmup, rotation, and monitoring.
Explore InfrastructureDeliverability audit and recovery service — diagnosing spam placement, blacklist damage, and sender reputation problems.
Explore DeliverabilityReal Google Workspace mailboxes provisioned, Gmail-specific authentication configured, and Postmaster monitoring active.
Explore GWS SetupExchange Online mailboxes provisioned, M365 DKIM configured through Exchange admin, and SNDS monitoring active.
Explore M365 SetupEverything teams ask before getting their email authentication fixed.
Tell us how many sending domains you have and which providers you're on. We'll audit every record and fix what's broken — same day.
Configured correctly, monitored continuously, and auto-repaired when anything drifts — so authentication never stops your campaigns.